As sisters and brothers advanced into old age, closeness increases and rivalry diminishes, explains VC, a psychologist at Purdue University.
出自-2014年6月听力原文
This period was one of inter-elite rivalry, in which nobles sought to increase their influence by funding the construction of churches and other buildings.
2019年12月六级真题（第一套）听力 Section C
柯林斯高阶英汉双解学习词典释义
N-VAR
竞争;敌对
Rivalry is competition or fighting between people, businesses, or organizations who are in the same area or want the same things.